2⼀5×0.27×(8⼀9+1⼀3)用简便计算怎么写

2025-06-22 10:17:27
推荐回答(1个)
回答1:

2/5×0.27×(8/9+1/3)=2/5x0.24+2/5x0.09
=2/5x(0.24+0.09)
=0.4x0.33
=0.132